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Baltimore, Fort McHenry water levels in 2011
Annual rank6 / 123
vs. average20.9 cm
Highest monthly peak1.14 mApril 2011
Monthly mean vs. previous year
| Month | 2011 (cm) | 2010 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -5.9 | -7.0 | 1.1 | 0.50 |
| Feb | -6.3 | -7.2 | 0.9 | 0.61 |
| Mar | 9.1 | 16.9 | -7.8 | 1.01 |
| Apr | 13.3 | 9.6 | 3.7 | 1.14 |
| May | 25.7 | 10.4 | 15.3 | 0.86 |
| Jun | 19.2 | 15.0 | 4.2 | 0.84 |
| Jul | 18.4 | 11.6 | 6.8 | 0.73 |
| Aug | 18.6 | 22.2 | -3.6 | 0.74 |
| Sep | 30.7 | 20.0 | 10.7 | 0.93 |
| Oct | 18.8 | 11.5 | 7.3 | 0.90 |
| Nov | 8.7 | 10.0 | -1.3 | 0.67 |
| Dec | 2.7 | -8.8 | 11.5 | 0.82 |
Nearby years (cm vs. average)
+13.2
+9.1
+12.5
+16.1
+16.8
+20.9
+18.3
+15.3
+16.5
+14.2
+16.9
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2011 annual mean water level ranked 6 of 123 years (20.9 cm vs. the period average).